Old body Honeywell V8043 zone valve

pyme66

I am posting a couple of photos of a Honeywell zone valve that appears to have an odd (old) round body. The can says that the valve is a V8043F5036 (3/4", 24V) but all the specs I have found online for such a valve have a body with a square flange. The valve has been malfunctioning and I want to upgrade the actuator, if possible, without changing the body.
Anybody recognizes the body of this valve? I called Honeywell tech support and they suggested to install a 40003918-006/U adapter that will allow installing a new actuator. However, the adapter needs a square flange on the body, which the body does not have.
Any help will be greatly appreciated.
Thanks,
Achilles

HVACNUT

I gotta tell you, in 30+ years, I dont think I've ever seen that valve body.
Nows the time for a zone valves upgrade and ECM circulator.

EBEBRATT-Ed

The actuator will probably cost as much as a complete new valve because they sell a lot more complete valves. Plus you will have to futz with it to make it work. Being only 3/4" it's not very expensive. I would change the whole thing

hot_rod

I'd wonder about the condition of the ball or flapper inside, time to replace them.
Go with a higher Cv valve 7.5 and an Alpha ECM or other brand. You will get a more efficient valve and circulator pump, saving $$.

tim smith

That part shows up on supplyhouse, showing the round body. Looks like you can order motor only or actuator complete

unclejohn

Does not appear to that old. 2004 maybe.